Urethane on Aluminum Wheels

Capacities rival those of steel wheels. Careful attention is paid
during the bonding process to assure that each wheel meets high
performance standards. UI wheels are non-marking, and resistant to
abrasion, chemicals, and oil. These wheels will typically outlast rubber
wheels.

Straight Roller Bearings

Straight roller bearings consist of a cage-type roller assembly and
a split outer race. These bearings turn on hardened and ground
spanner bushings which provide a long wearing precision inner race.
Press fit combination metal retainer/thrust washers hold the bearings in
place. Straight roller bearings have a high radial capacity, but
minimal side thrusting load rating.